Spring-barrel mechanism for type-writing machines.



L. O. MYERS. SPRINGBARREL MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED JUNE 12, I909. RENEWED JAN. 29, 1913.

Patented Sept. 2, 1913.

2 SHEETSBHEBT 1.

WITH/58858:

L. C: MYERS.- SPRING BARREL MECHANISM FOR TYPE WRITING MACHINES. APPLICATION FILED JUNE 12, 1909. RENEWED JAN. 29, 1913.

1 ,O72,149. Patented Sept. 2, 1913.

2 8HEETS-SHEET 2.

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WITNESSES:

Q Q X 5 Ira/Ewan 501%! g zlw UNITED STATES Pigr NT oFFioE.

LEWIS G, MYERS,

new noun, N. In, assmwm mo sown. THBEWRIIEB eoulumr,

o1- rmwigoa-x. t. an, a GB'BPORATION on NEW JERSEY.

mammal tr Iicttflrs mm.

Patent-ed Sept. 2, 1913.

Application filed June 12. 1809. Serial m. 501.693. Renewed January 23, 1913. Serial No. 745,007.

To all whom it may concern;

B. it n ws that g L wis My. a c tizen o h United ta s at Am ca, re: i s 1 e b 5 of Br kly ex rand State oi New Yer have inva ted ce'rtaln mpr nt n. gpr g fiarr s h mam for TypeW e, use, s hi the follewmg 1s a e e fieatwn.

The ge e al purpose of the inventive is to pr v de simnl aa reflec -we mane tev' a semhlma he snr aarrel-. a he easem nts draw apea Fig re l s e ta si e ele at ar y section showing we term, at the WW F g 2i; an

elevation of the neht and 53% 053 s. 1.; .s 4 an 5 detail vis ts at t a spective parts 0 t e com ,O S 8 1'4 rel shaft: Fi 6, a seetioii on liiie 2. 6, (if Fig. 1: Fig. t, a side elevation showing a modified construction: 8 a elevation from the left handside. 0% F Figs. 9, 1O and'll are detail views of Hie respective parts f he recrea e p rs barr l: ett employed in the construction Figs. 7 and 8: Figs. 12, 1s and 14 are detail views of the respective parts of a composite spring barrel shaft of still another construction.

Reference will first be made to the construction disclosed in Figs. 1 to 6 inclusive. 1 is the ribbon driving shaft carrying a loose pinion 2 meshing with a driving gear 3 of the spring barrel. The pinion 2 is connected with the shaft through a ratchet 4 formed on the hub integral with the wheel and engaged by a spring pressed pawl 5 contained in a cup or housing attached to the end of the shaft. By this means, the ribbon is driven during the forward movement of the carriage but the shaft 1 remains at rest during the return movement. 7 is the casing or barrel of a spring drum at one side of which is secured the driving gear 3. The spring barrel shaft is composed of two members 8 and 9. The part 8 is of two diameters and at that end of larger diame terthere is secured a worm gear 10; The part 8 of reduced diameter has adjacent the shoulder formed by the part-of the larger diameter a cross pin 8". The other part 9 of the shaft has a central hub 9 on the periphcry of which is a hook 9 to receive'the lnner asin 1 mitten indicated in g clusive Wlll now be described. The parts of I et-tiea Slat 9f s its eed and th th r a as m i a. threade aperture When sembl d a 1 Fig the par 1s p-ped over, 8. the era pm 5 enter'm lot and, teekmg toge h r the pm p s. re at t e s aft. endith hu 9-., .es l l th care 7. One end o th cell t pmn is attached to th (1 k 9' and th t. je-r tag to th mtee x t e c ing. 7 The an 0 t e PW: 51 .1 has .e n'pessed through, t e. else-re a mounted n sui able beer;

mg ,131 a bracket with th eth r and lust ,msde of the warm sea 1 s shear:- gig n. a other bra k .2.- A-,.1e l 1 irclmg a, part at he memb r 9 is held 31. et ere P i g thro co lar a mt he thr e ed apertu e t n the pa t A a jus -able warm, 18 urn mg m. a beaver 111 racket .2. engaes e w rm gear 19 and a ford a means read ad ustment of tension of the spring Q, 20 indicates the'ordinary draw tape extending from the s ring barrel to theicarriage.

The construe ion shown in Figs. 'F-M m-,.

the composite shaft are shown in Figs. 9, 10 and 11. They are the same as shown in Figs. 3, 4 and 5 except that the part 8 is reduced in length as also is the part 9. There is the same cross pin 8 adapted to engage a slot 9. In addition to the slot 9 in. the part 9 there is also at right angles to the slot a tapped aperture 9 to receive a screw bolt 21 Fi 7 passing through a collar 22. The sha t in this construction is not extended beyond the spring barrel as the ribbon is to be differently driven. In Fig. 7, there is a stud shaft carrying at one end a bevel gear 23 adapted to intermesh with a gear through which the rib on mechanism is actuated and on the oppos .e end of the shaft there is a ratchet wheelQet driven by a spring pressed pawl 25 rocking about a pin in the side face of the spring barrel. The adjustment is effected by worm and gear devices in the manner already described. Figs. 711 14 show the devices as adapted to a machine dilfering somewhat in general construction from that to which the devices ofFigs. ,1 to 6 inclusive are adapted. I I

Figs. 12, 13 and l t-show a modification. Instead of employing the reduced circular portion 8 of the composite shaft that part of it marked 8 (Fig. 12) is square in cross section and the bore of the sleeve 9 is corre- 110 spondingly shaped. Otherwisethe construction is in all respects the same as that indicated in Figs. 9, l0 and 11.

I claim;

1. Spring barrel mechanism for a writing machine, comprisin a two-part shaft, one part in the form 0 a sleeve centrally enlarged circumferentially and having on said enlargement a means for at-' tachment of the inner end of the spring and having a transverse notch in onereduced end, and an aperture in the other; and the other part a rod fitting within the sleeve and having a transverse projection fitting in said notch in the end of the sleeve; a collar on Ithe other end of thesleeve and a screw passing through said collar and the aperture in one end of the sleeve.

2. Spring barrel mechanism for a typewriting machine comprising a two-part shaft, one part in the form of a sleeve centypetrally enlarged circumferentially and hav-' ing on said enlargement a means for-attachment of the inner end of the spring and also having an aperture; and the other part a rod fitting within the sleeve, the sleeve and rod respectively being formed with interlocking means that unite them for rotation, a collar on the sleeve and a screw passing through the collar and into the aperture in the sleeve.

3. Spring barrel mechanism for a typewriting machine, 'comfprising a two part shaft, one part in the orm of a sleeve cen trally enlarged circumferentially and having on said enlargement a means for attachment of the inner end of the spring, the reduced end portions of the sleeve serving as a support for the spring barrel and upon which 1t may rotate, the other part a rod fitting within the sleeve and connected thereto to turn therewith.

4. Spring barrel mechanism for a typewriting machine, comprising a two part shaft, one part in the form of a sleeve centrally enlarged circumferentially and having on said enlargement a means for attachment of the inner end of the spring, the reduced end portions of the sleeve serving as a support or the spring barrel'and upon which it may rotate, the other part a rod fitting within the sleeve and connected thereto to turn therewith, the rod terminating in one end in a locked'rod and sleeve independently of rotation of the spring barrel.

In testimony subscribed my name.

- LEWIS C. MYERS; Witnesses:

E. D. Hess, ANDREW J. SHERIDAN.

worm for adjusting the inter whereof, I have hereunto 

